1. When the instrument is situated at more than 700 miles from the earthquake centre,
    如果把这种仪器安装在距震源700多英里远的地方，

2. It was situated on the first floor, well lighted by a broad window overlooking the park.
    它位于一楼，一个可以俯视到公园的大窗户使房间采光很好。